Patents by Inventor Graham G. Haddock, III

Graham G. Haddock, III has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Communication device with ISDN interface
    Patent number: 5257410
    Abstract: Briefly, according to the invention, a multi-unit communication device having a transceiver unit 108 and a control unit 104 is provided. The transceiver unit 108 transmits and receives information signals having digital and analog portions. The control unit 104 provides for operator interface to the communication device. The communication between the transceiver unit 108 and the control unit 104 is conducted on a single pair of wires 112 using ISDN format.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: October 26, 1993
    Assignee: Motorola, Inc.
    Inventors: William R. Meszko, Graham G. Haddock, III